Pump-bailer.



No. 851,468. PATENTED APR. 23, 1907.

. R. L. WOODARD.

PUMP BAILBR.

APPLICATION FILED SEPT. 14, 1908.

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A TTOR/VE Y5 ROY LEON WVOODARD, OF RIOHBURG, NEl/V YORK.

PUMP-BAILER.

Specification of Letters Patent.

Patented April 23, 1907.

Application filed September 14:, 1906. Serial No. 334,630.

To all whmn zit may concern:

' Be it known that I, ROY LEON Woonann,

-a citizen of the United States, residing at Riehburg, in the county of Allegany and State of New York, have invented a new and useful Pump-Bailer, of which the following is a specification.

This invention relates to sand pumps or bailers for wells and more particularly to a pump or bailer especially designed for removing sand, sediment and other foreign matter from oil wells.

The object of the invention is to provide a comparatively simple and inexpensive bailer having a vertically reciprocating valve movable to open position when the bailer is lowered into the well and adapted to automatically close when the bailer is withdrawn, said valve coacting with a plurality of the intake and discharge ports at the lower end of the casing whereby practically all the sand and sediment may be removed from the well.

A further object is to provide a pump or bailer capable of being readily dumped without the necessity of inverting the same.

A further object is to provide means for yieldably supporting the valve in closed position, and means for preventing rotation of the valve when the latter is moved to open or closed position.

Astill further object of the invention is to generally improve this class of devices so as to increase their utility, durability and ellicicncy.

lVith these and other objects in view the invention consists in the construction and novel combination and arrangement of parts hereinafter fully described, and illustrated in the accompanying drawings, it being understood that various changes in form, proportions and minor details of construction may be resorted to within the scope of the ap ended claims.

n the accompanying drawings forming a part of this specification: Figure 1 is a longitudinal sectional view of a sand-pump or bailer constructed in accordancewith my invention and showing the valve in open position. Fig. 2 is a similar view showing the valve in closed position. l 3 is a top plan view partly in section.

Similar numerals of reference indicate corresponding parts in all of the figures of the drawings.

The improved device comprises a tubular body portion or casing 5 provided with a depending annular ring or base 6 the upper end of which is formed with a recess 7 adapted to receive the adjacent end of the casing 5, the parts being rigidly secured together by means of rive ts or other suitable fastening devices 8.

The depending ring or base 6 is open at its lower end and the side walls thereof are pro vided with a plurality of intake and discharge ports 9 which communicate with the interior of a cylinder 5, as shown, said ports being spaced upwardly from the bottom of the base 6 and adapted to register with corresponding ports or openings 10 formed in the ilange 11 oi a valve 12. The valve 12 is mounted for vertical movement within the base 6 and is provided with a stem 13 the upper end of which is formed with an enlargement 1 L defining an annular shoulder 15.

The upper end of the valve-stem 13 passes through a brace 16 extending transversely across the top of the casing 5 and is provided with a threaded terminal 17 for engagement with a pair of clamping nuts 18. The opposite ends o'l the brace 16 are bent to form vertically disposed arms 18 which bear against the interior walls of the casing 5 and are rigidly secured thereto in any suitable manner as by rivets or similar fastening devices 19.

Surrounding the enlargement 14 is a collar or sleeve 20 the upper end of which is bent to form a lateral lla-nge 21 which engages the brace 16 and also forms a bearing -for one end of a coiled spring 22 the opposite end of which bears against a pin 23 seated in one of a plurality of openings 24 extending transversely across the enlargement 14 oi the valve-stem. The sleeve 20 serves to center the spring 22 with respect to the valve-stem thereby to permit 'l'ree vertical movement of said stem while the pin 23 by engagement with the openings 2-1 serves to adjust the tension of the spring and thereby regulate the throw of the valve.

Mounted lor reciprocation Within the easing 5 is a plunger 25 having a central opening l ormed therein for the reception of the valvestcm 13 and provided with an operating-bail 26 the free end of which extends above the upper end of the casing 5 for attachment with a rope-cable, or other suitable operating device.

The tendency of the coiled spring 22 is to normally hold the valve 12 in 0 en position with the ports 10 registering wit 1 the ports 9 in the casing 5 so as to permit the oil or water together with the sand or sediment to flow through the ports 9 and 10 into the casing when the latter is lowered into a well, the plunger 25 on its up ward movement engaging the shoulder on the valve-stem and moving the valve vertically to closed position thus retaining the sand and sediment within the cylinder while the latter is being withdrawn from the well.

As a means for preventing rotary movement of the valve 12 when the latter is moved to operative and inoperative position there is provided a screw 27 the head of which is counter-sunk in the casing 5 while the threaded end thereof engages vertically disposed groove 28 formed in the flange 11 of the valve.

In operation the casing 5 is lowered into the well and in which position the ports 10 will register with the ports 9. The casing is then Withdrawn from the well by exerting an upward pull on the cable 29. The initial upward pull exerted on the cable 29 will elevate the plunger 25 and thus suck the sand and sediment through the ports 9 and 10 into the casing, a further movement on the cable causing the plunger 25 to engage the shoulder 15 and thus move the valve to closed position so. that the casing may be readily withdrawn from the well.

In order to discharge the contents of the casing it is merely necessary to rest or stand the lower end of the casing on the derrick or other suitable support when the pressure on the stem 13 being relieved will cause the valve to move to open position and thus perunit the sand and sediment to be discharged through the ports 9, as will be readily understood.

By having the ports formed in the lower end of the casing practically all of the sand and sediment in the well may be removed while by reason of the disposition of said ports and the arrangement of the valve, liability of the latter becoming clogged, or otherwise obstructed by sand or sediment is reduced to a minimum.

From the foregoing description it will be seen that there is provided an extremely simple, inexpensive and efiicient device admirably adapted for the attainment of the ends in view.

Having thus described the invention what is claimed is:

1. A sand-pump comprising a casing hav ing its lower end provided with a port, a valve provided with a corresponding port adapted to register with the port in the easing when the valve is in open position, a spring for yieldably supporting the valve in open position, and a plunger for moving the valve in open position when the pump is Withdrawn from the casing.

2., A sand-pump comprising a casing having a port formed in the lower end thereof, a valve provided with a corresponding port adapted to register with the port in the casing, a valve-stem, a spring carried by the valve-stem for yieldably supporting the valve in open position, and a plunger slidably mounted within the casing and adapted to engage the valve stem for automatically closing the valve when the pump is withdrawn from the well.

3. A sand-pump comprising a casing having its lower end provided with ports, a valve arranged within the cylinder and provided with corresponding ports adapted to register with the ports in the casing, a valve-stem having its upper end provided with a shoulder, a spring carried by the valve-stem for yieldably supporting the valve in open position, a plunger arranged within the casing and provided with an operating bail, said plunger being adapted to engage the shoulder on the valve-stem for moving the latter to closed position when the pump is withdrawn from the 'well.

4. A sand-pump having its lower end provided with a port, a valve provided with a corresponding port adapted to register with the port in the casing, means for preventing rotation of the valve, and a plunger adapted to engage the stem of the valve for moving the latter to closed position when the pump is withdrawn from the well.

5. A sand-pump comprising a casing having its lower end provided with ports, a valve arranged within the casing and provided with corresponding ports adapted to register with the ports in the casing, a valve-stem having its upper end provided with an enlargement defining a shoulder, there being a plurality of transverse perforations formed in the enlargement of the valve stem, a sleeve surrounding the enlargement and having its upper end provided with a laterally extending flange, apin engaging one of the openings in the enlargement, a spring interposed between the flange and said pin for yieldably supporting the valve in open position, and a plunger slidablymounted on the valve-stem and adapted to engage the shoulder for moving the valve to closed position when the pump is withdrawn from the well.

6. A sand-pump comprising a casing having ports formed in the lower end thereof, a valve provided with a vertically disposed flange having ports therein adapted to register with the ports in the casing, a brace extending across the casing at the upper end thereof, a valve-stem passing through the brace and having its free end threaded, said stem being provided with an enlargement defining a shoulder and having a plurality of spaced transverse openings formed therein, a pin engaging one of the openings, a sleeve surrounding the enlargement, a spring bearing against the sleeve and interposed between the brace and the pin, clamping nuts engaging the threaded end of the valve-stem,

and a plunger slidably mounted on the valve stem and adapted to engage the shoulder for moving the valve to closed position when the pump is withdrawn from the well.

7. A sand-pump comprising a casing, a ring secured to the lower end of the casing and having ports formed in the side walls thereof, a valve provided with a vertical flange having corresponding ports formed therein and adapted to register with the ports in the casing, said flange being provided with a vertically disposed groove, a screw threaded in the ring and engaging the groove for preventing rotary movement of the valve, a valvestem, means for yieldably supporting the valve in open position, and a plunger adapted to engage the valve-stem for movingthe valve to open position when the pump is Withdrawn from the well.

8. A sand-pump comprising a casing, a ring provided with an annular recess for the reception of the lower end of the cas ng and having a plurality of ports formed in the side walls thereof, a valve provided with a vertically disposed flange having corresponding ports formed therein adapted to register with the ports in the casing, means for preventing rotary movement of the valve, a brace eX- tending transversely across the top of the casing, a valvestem passing through an opening in the brace and provided with an en largement defining an annular shoulder, there being spaced openings formed in the enlargement, a pin engaging one of said openings, a sleeve embracing the enlargement, a spring interposed between the brace and the pin and bearing against said sleeve, a plunger slidably mounted on the valve stem and adapted to engage the shoulder for automatieally opening the valve when the pump is withdrawn from the well, and an operating bail secured to the plunger and projecting beyond the free end of the casing.

Intestimony that I claim the foregoing as my own, I have hereto it'lllXOCl my signature in the. presence of two witnesses:

ROY LEON VOODARD. WVitnesses:

LAVERY C. BASSETT, LEE Con. 

